CN209324457U - A kind of camshaft phase converter structure with check valve - Google Patents
A kind of camshaft phase converter structure with check valve Download PDFInfo
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- CN209324457U CN209324457U CN201822174508.XU CN201822174508U CN209324457U CN 209324457 U CN209324457 U CN 209324457U CN 201822174508 U CN201822174508 U CN 201822174508U CN 209324457 U CN209324457 U CN 209324457U
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- valve
- check valve
- hydraulic oil
- pressure chamber
- phase converter
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Abstract
The utility model provides a kind of camshaft phase converter structure with check valve, including stator, back shroud, rotor and check valve, the inner cavity of the stator is divided into several pressure chambers by several stator vanes, pressure chamber is separated into First pressure chamber and second pressure chamber by the rotor blade on the rotor, hydraulic oil storage chamber is formed between the stator and back shroud, check valve is arranged between hydraulic oil storage chamber and pressure chamber, and controls the hydraulic oil in hydraulic oil storage chamber to pressure chamber one-way flow by check valve.The utility model can be when pressure chamber sucks air due to for shortage of oil, hydraulic oil can be sucked in time from hydraulic oil storage chamber to reduce the sucking to air, its negative pressure is better balanced, but the hydraulic oil in pressure chamber can not be entered in hydraulic oil storage chamber by check valve, to which the repairing rate of pressure chamber be effectively promoted, and then make camshaft phase converter that there is faster phase modulation speed.
Description
Technical field
The utility model relates to camshaft phase converter field of structural design, more particularly, to a kind of camshaft with check valve
Phase converter structure.
Background technique
Variable valve timing system is opened and closed the moment by changing engine valve, can promote power, the torque of engine, drops
The fuel consumption and discharge of low engine are one of automotive energy-saving emission-reducing new technologies.
Since the camshaft phase converter in variable valve timing system is to control the effect of its phase modulation by hydraulic oil, for
The utilization of hydraulic oil different modes decides the phase modulation speed of camshaft phase converter, meanwhile, the cleannes of hydraulic oil also influence
The working performance and reliability of camshaft phase converter.Therefore, in order to improve the phase modulation speed of camshaft phase converter, it is necessary to convex
The Land use systems of hydraulic oil in wheel shaft phase converter are studied.
Utility model content
Technical problem to be solved by the utility model is: in view of the problems of the existing technology, providing a kind of band check valve
Camshaft phase converter structure, the repairing rate of adherence pressure chamber, improve camshaft phase converter phase modulation speed.
The technical problems to be solved in the utility model is realized using following technical scheme: a kind of camshaft with check valve
The inner cavity of phase converter structure, including stator, back shroud, rotor and check valve, the stator is divided by several stator vanes
Pressure chamber is separated into First pressure chamber and second pressure chamber, the stator by several pressure chambers, the rotor blade on the rotor
Hydraulic oil storage chamber is formed between back shroud, the check valve is arranged between hydraulic oil storage chamber and pressure chamber, and logical
The hydraulic oil in check valve control hydraulic oil storage chamber is crossed to pressure chamber one-way flow.
Preferably, the first check valve is set between the hydraulic oil storage chamber and adjacent First pressure chamber, it is described
Second one-way valve is set between hydraulic oil storage chamber and adjacent second pressure chamber.
Preferably, the back shroud is fixedly connected with the cover, and oil passage is formed between back shroud and the cover, described
Oil passage communicated with hydraulic oil storage chamber.
Preferably, the cover through-hole is opened up in the cover, the cover through-hole is communicated with oil passage respectively.
Preferably, the check valve includes valve seat, elastic valve plate, and the valve seat is hollow cavity structure, in valve seat
On open up valve import, described elastic valve plate one end is fixedly connected in valve seat hollow cavity, the other end seals in its natural state
Firmly valve import；When the hydraulic fluid pressure from valve import is more than elastic valve plate setting cracking pressure, the elastic valve plate and valve
Releasing in sealing contact between import, check valve are opened.
Preferably, retention bead is set on the valve seat.
Preferably, several are arranged in the retention bead, several described retention beads are asymmetric on valve seat
Structure setting.
Preferably, be fixedly connected with valve block baffle on the valve seat, the valve block baffle limitation elastic valve plate relative to
The aperture of valve import.
Preferably, countersunk head slot is opened up on the valve seat, the countersunk head slot covers valve import.
Preferably, the elastic valve plate is to be fixedly connected integrally by shielding plate with cantilever one end of L-shaped structure, described
The cantilever other end is fixedly connected with valve seat, and the cantilever makes shielding plate seal up valve import in its natural state.
Compared with prior art, the utility model has the beneficial effects that hydraulic by being formed between stator and back shroud
Oily storage chamber, while check valve is set between hydraulic oil storage chamber and pressure chamber, and controls hydraulic oil storage by check valve
Hydraulic oil in chamber is to pressure chamber one-way flow.When pressure chamber sucks air due to for shortage of oil, can be stored from hydraulic oil
Hydraulic oil is sucked in chamber in time to reduce the sucking to air, more hydraulic oil is made to get enter into pressure chamber, with more preferable Horizon
Weigh its negative pressure, but the hydraulic oil in pressure chamber can not be entered in hydraulic oil storage chamber by check valve, therefore, effectively be mentioned
The repairing rate of pressure chamber is risen, to make camshaft phase converter that there is faster phase modulation speed.
Detailed description of the invention
Fig. 1 is a kind of main view (cross-sectional view) of the camshaft phase converter structure with check valve of the utility model.
Fig. 2 is the schematic diagram of internal structure of the camshaft phase converter structure shown in FIG. 1 with check valve.
Fig. 3 is the three-dimensional structural map of the check valve in Fig. 2.
Fig. 4 is the main view of the check valve in Fig. 2.
Fig. 5 is the side view of the check valve in Fig. 2.
Fig. 6 is the cross-sectional view of the check valve in Fig. 2.
Component token name claims in figure: 1- front shroud, 2- slide valve, 3- pressure chamber, 3a- First pressure chamber, 3b- second pressure
Chamber, 4- stator, 5- hydraulic oil storage chamber, 6- the cover, 7- back shroud, 8- rotor, 9- check valve, the first check valve of 9a-, 9b-
Two check valves, 10- reset spring, 11- oil passage, 12- connection bolt, 21- oil inlet, 22- threaded joints, 23- are fuel-displaced
Mouthful, 41- stator vane, 61- the cover through-hole, 71- cover board oilhole, 81- rotor blade, 91- valve seat, 91a- valve shell, 91b- valve
Pedestal, 92- elastic valve plate, 92a- shielding plate, 92b- cantilever, 93- retention bead, 94- valve block baffle, 95- valve import, 96- are heavy
Head slot.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
The utility model is described in detail in embodiment.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model is not used to limit the utility model.
Camshaft phase converter structure as shown in Figure 1 and Figure 2 with check valve mainly includes front shroud 1, stator 4, the cover
6, back shroud 7, rotor 8 and check valve 9 and reset spring 10, the opposite sides of the stator 4 be respectively set front shroud 1, after
Cover board 7 opens up cover board oilhole 71 on back shroud 7；The front shroud 1, stator 4 pass through connection bolt 12 between back shroud 7
It is fastenedly connected integral, the formation hydraulic oil storage chamber 5 between stator 4 and back shroud 7.The inner cavity of the stator 4 passes through several
Stator vane 41 is divided into several pressure chambers 3, and the hydraulic oil storage chamber 5 is independently of pressure chamber 3, in hydraulic oil storage chamber 5
Check valve 9 is set between pressure chamber 3, and the hydraulic oil in hydraulic oil storage chamber 5 is controlled to 3 list of pressure chamber by check valve 9
To circulation, and the hydraulic oil being located in pressure chamber 3 can not then be circulated by check valve 9 to hydraulic oil storage chamber 5.The reset
Spring 10 preferably uses torsional spring, and opposite end is connect with stator 4, back shroud 7 respectively.
It is formed a fixed connection structure between the back shroud 7 and the cover 6 with interference fit type, in back shroud 7 and cover
Oil passage 11 is formed between lid 6, the oil passage 11 is communicated with hydraulic oil storage chamber 5.It is logical that the cover is opened up in the cover 6
Hole 61, the cover through-hole 61 are communicated with oil passage 11, ambient atmosphere respectively.The rotor 8 is arranged in 4 inner cavity of stator
In, and rotor 8 can rotate within the scope of certain angle relative to stator 4, and in the two relative rotational motion, the rotor 8
On rotor blade 81 pressure chamber 3 is separated into First pressure chamber 3a and second pressure chamber 3b, also, for same pressure chamber 3,
If First pressure chamber 3a volume reduces, second pressure chamber 3b volume increases；, whereas if First pressure chamber 3a volume increases
Add, then second pressure chamber 3b volume reduces.
The check valve 9 is fixedly connected with stator vane 41.The position of the check valve 9 is away as far as possible stator 4
Rotation center, opening direction is the circumferencial direction of stator 4, so that hydraulic oil more easily passes through check valve 9 from hydraulic oil reservoir
It deposits chamber 5 and enters pressure chamber 3.In general, being that the first check valve is arranged between hydraulic oil storage chamber 5 and adjacent First pressure chamber 3a
9a, when the first check valve 9a is opened, hydraulic oil in the hydraulic oil storage chamber 5 can be by the first check valve 9a to first
Pressure chamber 3a one-way flow.Second one-way valve 9b is set between hydraulic oil storage chamber 5 and adjacent second pressure chamber 3b, when the
When two check valve 9b are opened, hydraulic oil in the hydraulic oil storage chamber 5 can be by second one-way valve 9b to second pressure chamber
3b one-way flow.
As shown in figure 3, figure 4 and figure 5, the check valve 9 includes valve seat 91, elastic valve plate 92, during the valve seat 91 is
Cavity body structure, opens up valve import 95 on valve seat 91, and one end of the elastic valve plate 92 is fixedly connected on the hollow of valve seat 91
Cavity is interior, the other end seals up valve import 95 in its natural state；When the hydraulic fluid pressure from valve import 95 is more than feather valve
When the setting cracking pressure of piece 92, releasing in sealing contact between the elastic valve plate 92 and valve import 95, check valve 9 is opened；
Otherwise, state in sealing contact is kept between the elastic valve plate 92 and valve import 95, check valve 9 is closed.Feather valve in order to prevent
Piece 92 is excessively opening under the effect of the hydraulic fluid pressure of valve import 95 relative to valve import 95, guarantees the dynamic of elastic valve plate 92
Make sensitivity, valve block baffle 94 can be fixedly connected on valve seat 91,92 phase of elastic valve plate can be limited by valve block baffle 94
It for the aperture of valve import 95, prevents valve block baffle 94 from leading to its permanent deformation because aperture is excessive, in turn results in the damage of check valve 9
It is bad.
The valve seat 91, which can be, to be fixedly connected integrally, as shown in Figure 6 by valve shell 91a with valve base 91b.Wherein
Valve shell 91a can be moulding, valve base 91b can be sheet metal, so as between valve shell 91a and valve base 91b
Can be integral by injection molding manner consolidated combination, the production cost of check valve 9 is not only saved, but also facilitate check valve 9
Installation.Connected as shown in figure 4, the elastic valve plate 92 can be by one end cantilever 92b of shielding plate 92a and L-shaped structure is fixed
It is connected into one, the other end of the cantilever 92b is fixedly connected with valve seat 91, and the cantilever 92b makes to block in its natural state
Piece 92a is able to seal up valve import 95, to realize the closing of check valve 9.The valve import 95 is preferably using ellipse knot
Structure through-hole reduces throttling to increase the inlet flow rate of check valve 9 as wide as possible.Correspondingly, the shielding plate
92a also uses the thin-wall boards of ellipsoidal structure, so that shielding plate 92a elasticity is covered valve import 95, while having certain sealing
Reliability.
The valve seat 91 is usually fixed on the stator vane 41 for being mounted on stator 4.As shown in figure 3, single in order to prevent
The anti-loaded direction of valve import 95 on valve 9, can be arranged retention bead 93 on valve seat 91.The retention bead 93 can be set
It sets several and is preferably arranged on valve seat 91 in dissymmetrical structure, rotation when better ensuring that check valve 9 assembles is anti-
Wrong and overturning mistake proofing.Countersunk head slot 96 can also be opened up on valve seat 91, the countersunk head slot 96 covers valve import 95, such as Fig. 5, figure
Shown in 6, by the way that countersunk head slot 96 is arranged, the hydraulic oil resistance into valve import 95 can be effectively reduced, entering for check valve 9 is increased
Mouth flow is conducive to the control sensitivity for improving check valve 9.
The check valve 9 designed using the above structure, is not only simple in structure, characteristics of compact layout, and the one-way flow to fluid
Control reliable, implementation cost is also low.
The camshaft phase converter of the utility model is usually used cooperatively with slide valve 2, and one end of the slide valve 2 forms spiral shell
Line interconnecting piece 22, the threaded joints 22 through back shroud 7, rotor 8, after front shroud 1 with the internal screw thread on camshaft
Screw connection structure is formed, oil inlet 21, oil outlet 23 are respectively formed on slide valve 2, the camshaft passes through oil inlet
21 into slide valve 2 fuel feeding, from oil outlet 23 flow out hydraulic oil followed by after oil passage 11, cover board oilhole 71 enter liquid
In pressure oil storage chamber 5, as shown in Figure 1.The cover board oilhole 71 is as close to the outer circle position of back shroud 7, in camshaft
Phase converter rotates under centrifugal force effect, and hydraulic oil meeting preferential build is in the outer circle position of the cover 6, to guarantee there is foot in stator oil groove
Enough hydraulic oil.The hydraulic oil flowed out from oil outlet 23 preferentially fills full hydraulic oil storage chamber 5, to guarantee hydraulic oil storage chamber 5
In hydraulic oil it is sufficient.After the hydraulic oil in hydraulic oil storage chamber 5, oil passage 11 is full of, extra hydraulic oil can lead to
Cross the discharge of the cover through-hole 61.
In the camshaft phase converter course of work, hydraulic oil enters in pressure chamber 3, to realize between rotor 8 and stator 4
It relatively rotates.During rotor 8 and stator 4 relatively rotate, for the same pressure chamber 3, when First pressure chamber therein
3a is due to volume increases when pressure reduction, then second pressure chamber 3b pressure rise due to volume reduces, in second pressure chamber 3b
Hydraulic oil will be discharged by the corresponding oil duct in the inside of slide valve 2 from tail end, section hydraulic oil will go into hydraulic oil storage chamber 5
In.
During First pressure chamber 3a volume is increased, lead to first pressure if the fuel delivery of slide valve 2 is insufficient
Chamber 3a sucks air, reduces the adjustment speed of camshaft phase converter.When the hydraulic fluid pressure formed in First pressure chamber 3a
When lower than hydraulic fluid pressure in hydraulic oil storage chamber 5, the first check valve 9a will be opened, so as to the liquid in hydraulic oil storage chamber 5
Pressure oil can be entered in First pressure chamber 3a by the first check valve 9a, to reduce the sucking of the air in First pressure chamber 3a
Amount, and then balance the pressure in First pressure chamber 3a.But when the pressure in First pressure chamber 3a is stored greater than hydraulic oil
When pressure in chamber 5, first check valve 9a will be closed, so as to prevent the hydraulic oil in First pressure chamber 3a from flowing out to liquid
In pressure oil storage chamber 5.For the flow direction of volume variation and second one-way valve 9b control hydraulic oil in second pressure chamber 3b, with the
One pressure chamber 3a, the first check valve 9a are identical, and details are not described herein.
The utility model is cooperated by setting hydraulic oil storage chamber 5 and check valve 9, and the check valve 9 can allow
Hydraulic oil enters in pressure chamber 3 from hydraulic oil storage chamber 5, and the hydraulic oil in pressure chamber 3 is prevented to enter hydraulic oil by check valve 9
In storage chamber 5.It, can while the First pressure chamber 3a (or second pressure chamber 3b) on camshaft phase converter sucks air
It sucks hydraulic oil in time from hydraulic oil storage chamber 5 to reduce the sucking to air, more hydraulic oil is made to get enter into cam
The pressure chamber 3 of axis phase converter improves First pressure chamber 3a (or second pressure chamber 3b) benefit so that its negative pressure be better balanced
Oily rate, and then make camshaft phase converter that there is faster phase modulation speed.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Out, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc. should all include
It is within the protection scope of the utility model.
Claims (10)
1. a kind of camshaft phase converter structure with check valve, including stator (4), back shroud (7) and rotor (8), the stator
(4) inner cavity is divided into several pressure chambers (3) by several stator vanes (41), the rotor blade (81) on the rotor (8)
Pressure chamber (3) is separated into First pressure chamber (3a) and second pressure chamber (3b), it is characterised in that: further include check valve (9), institute
Formation hydraulic oil storage chamber (5) between stator (4) and back shroud (7) is stated, the check valve (9) is arranged in hydraulic oil storage chamber
(5) between pressure chamber (3), and it is single to pressure chamber (3) by the hydraulic oil in check valve (9) control hydraulic oil storage chamber (5)
To circulation.
2. the camshaft phase converter structure according to claim 1 with check valve, it is characterised in that: the hydraulic oil reservoir
It deposits and is arranged between chamber (5) and adjacent First pressure chamber (3a) the first check valve (9a), the hydraulic oil storage chamber (5) and phase
Second one-way valve (9b) is set between adjacent second pressure chamber (3b).
3. the camshaft phase converter structure according to claim 1 with check valve, it is characterised in that: the back shroud
(7) it is fixedly connected with the cover (6), forms oil passage (11) between back shroud (7) and the cover (6), the oil passage
(11) it is communicated with hydraulic oil storage chamber (5).
4. the camshaft phase converter structure according to claim 3 with check valve, it is characterised in that: the cover (6)
On open up the cover through-hole (61), the cover through-hole (61) is communicated with oil passage (11) respectively.
5. the camshaft phase converter structure according to claim 1-4 with check valve, it is characterised in that: described
Check valve (9) includes valve seat (91), elastic valve plate (92), and the valve seat (91) is hollow cavity structure, on valve seat (91)
It opens up valve import (95), described elastic valve plate (92) one end is fixedly connected in valve seat (91) hollow cavity, the other end is in nature
Valve import (95) are sealed up under state；When the hydraulic fluid pressure from valve import (95) is more than that pressure is opened in elastic valve plate (92) setting
When power, releasing in sealing contact between the elastic valve plate (92) and valve import (95), check valve (9) is opened.
6. the camshaft phase converter structure according to claim 5 with check valve, it is characterised in that: the valve seat (91)
Upper setting retention bead (93).
7. the camshaft phase converter structure according to claim 6 with check valve, it is characterised in that: the retention bead
(93) several are set, several described retention beads (93) are arranged on valve seat (91) for dissymmetrical structure.
8. the camshaft phase converter structure according to claim 5 with check valve, it is characterised in that: the valve seat (91)
On be fixedly connected valve block baffle (94), the valve block baffle (94) limits elastic valve plate (92) opening relative to valve import (95)
Degree.
9. the camshaft phase converter structure according to claim 5 with check valve, it is characterised in that: the valve seat (91)
On open up countersunk head slot (96), the countersunk head slot (96) covers valve import (95).
10. the camshaft phase converter structure according to claim 5 with check valve, it is characterised in that: the feather valve
Piece (92) is to be fixedly connected integrally by shielding plate (92a) with one end cantilever (92b) of L-shaped structure, and the cantilever (92b) is another
End is fixedly connected with valve seat (91), and the cantilever (92b) makes shielding plate (92a) seal up valve import in its natural state
(95)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174508.XU CN209324457U (en) | 2018-12-24 | 2018-12-24 | A kind of camshaft phase converter structure with check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174508.XU CN209324457U (en) | 2018-12-24 | 2018-12-24 | A kind of camshaft phase converter structure with check valve |
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| Publication Number | Publication Date |
|---|---|
| CN209324457U true CN209324457U (en) | 2019-08-30 |
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ID=67728265
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822174508.XU Active CN209324457U (en) | 2018-12-24 | 2018-12-24 | A kind of camshaft phase converter structure with check valve |
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| Country | Link |
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| CN (1) | CN209324457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488407A (en) * | 2018-12-24 | 2019-03-19 | 绵阳富临精工机械股份有限公司 | A kind of camshaft phase converter structure with check valve |
-
2018
- 2018-12-24 CN CN201822174508.XU patent/CN209324457U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109488407A (en) * | 2018-12-24 | 2019-03-19 | 绵阳富临精工机械股份有限公司 | A kind of camshaft phase converter structure with check valve |
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